Problem with Smarthome/J Viessmann Binding after Upgrade to 4.2.1

Hello,
I have now upgraded from 4.1.3 to 4.2.1. Everything is fine, except for the Smarthome/J Viessmann binding. The binding is no longer installed and cannot be installed.
The installation only returns the following error message:

Installation of add-on json:org-smarthome-binding-viessmann failed

No entries in the log.
I deleted the cache and restarted. Unfortunately, no success.

Does anyone have any ideas what I could try?

Many thanks.

Regards, Agio

Hello,
today I tried installing the binding again and suddenly it worked.

Why? I don’t know!
But the problem is solved.